a combination of ethnicity and nationalism can cause ethnic\n○ fear.\n○ dread.\n○ confusion.\n○ separation.

Brief Explanations:

When ethnicity and nationalism combine, it can lead to groups emphasizing their distinct identities, often resulting in ethnic separation as they seek self - determination or to be with their own ethnic group. Fear, dread, and confusion are emotions rather than direct results of this combination in the context of ethnic relations.

Answer:

D. separation